成人综合激情另类小说_亚洲色欲色欲WWW成人网麻豆_免费看又黄又无码的网站_午夜18禁自慰JK爆乳网站

千(qian)(qian)(qian)斤(jin)(jin)頂(ding)(ding)(ding)分為機械(xie)千(qian)(qian)(qian)斤(jin)(jin)頂(ding)(ding)(ding)和(he)液(ye)壓(ya)(ya)(ya)千(qian)(qian)(qian)斤(jin)(jin)頂(ding)(ding)(ding)兩種，原(yuan)理各有(you)不同(tong)(tong)。從原(yuan)理上來說，液(ye)壓(ya)(ya)(ya)千(qian)(qian)(qian)斤(jin)(jin)頂(ding)(ding)(ding)所基于的(de)(de)(de)原(yuan)理為帕(pa)斯卡原(yuan)理，即：液(ye)體各處的(de)(de)(de)壓(ya)(ya)(ya)強(qiang)是(shi)一(yi)致(zhi)的(de)(de)(de)，這(zhe)樣，在(zai)平衡的(de)(de)(de)系統中，比(bi)(bi)較(jiao)小(xiao)的(de)(de)(de)活塞(sai)上面(mian)施(shi)加的(de)(de)(de)壓(ya)(ya)(ya)力比(bi)(bi)較(jiao)小(xiao)，而(er)(er)大的(de)(de)(de)活塞(sai)上施(shi)加的(de)(de)(de)壓(ya)(ya)(ya)力也比(bi)(bi)較(jiao)大，這(zhe)樣能(neng)夠保持液(ye)體的(de)(de)(de)靜止。所以(yi)通(tong)過(guo)液(ye)體的(de)(de)(de)傳(chuan)遞，可以(yi)得(de)到(dao)(dao)(dao)不同(tong)(tong)端上的(de)(de)(de)不同(tong)(tong)的(de)(de)(de)壓(ya)(ya)(ya)力，這(zhe)樣就可以(yi)達到(dao)(dao)(dao)一(yi)個變(bian)換的(de)(de)(de)目(mu)的(de)(de)(de)。我們所常見(jian)到(dao)(dao)(dao)的(de)(de)(de)液(ye)壓(ya)(ya)(ya)千(qian)(qian)(qian)斤(jin)(jin)頂(ding)(ding)(ding)就是(shi)利用(yong)了這(zhe)個原(yuan)理來達到(dao)(dao)(dao)力的(de)(de)(de)傳(chuan)遞。機械(xie)千(qian)(qian)(qian)斤(jin)(jin)頂(ding)(ding)(ding)采用(yong)機械(xie)原(yuan)理，以(yi)往復扳動手(shou)柄，拔爪即推動棘輪間隙回轉(zhuan)(zhuan)，小(xiao)傘齒輪帶(dai)動大傘齒輪、使(shi)舉重螺桿旋(xuan)轉(zhuan)(zhuan)，從而(er)(er)使(shi)升降(jiang)套筒獲得(de)起(qi)升或(huo)下(xia)降(jiang)，而(er)(er)達到(dao)(dao)(dao)起(qi)重拉力的(de)(de)(de)功能(neng)。但不如液(ye)壓(ya)(ya)(ya)千(qian)(qian)(qian)斤(jin)(jin)頂(ding)(ding)(ding)簡易。